5* Blade or Aegon rank up for act 5 completion?

AndyBeardo

So I turned cavalier some weeks ago but due to shoulder issues I actually don't play much and without much ambition. I plan on completing act 5 next and wonder which 5* skill to rank up: Blade (got an awaneking gem left) or Aegon (sig 160). I love my 4* blade and I have spidy stark on 5/65 so the synergy would be nice. Aegon meanwhile is the way better champ for long fights. Got him on 5/45 duped 160 sig but will I even get the Chance zo ramp him up in act 5 if he is 5/65? Tecnically, I probably don't need either to finish most of act 5, my A Team consists of 5/65 Sunspot, Domino, Stark spidy and Venom plus 5/55 Rulk (domino synergy) with 6/25 aarkus and havok as other options.